285571 (2000 PQ9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4324411214 ± 8.16e-10
Semi-major axis (a)1.9035657241 AU ± 5.85e-10
Inclination (i)13.48266244° ± 1.16e-06
Long. of Asc. Node (Ω)297.16245353° ± 7.40e-07
Arg. of Perihelion (ω)7.05697041° ± 3.81e-06
Mean Anomaly (M)231.96152491° ± 1.27e-06
Mean Motion (n)0.3752843568°/day ± 1.73e-10
Perihelion dist (q)1.08038563 AU ± 1.59e-09
Aphelion dist (Q)2.72674582 AU ± 1.76e-09
Orbital Period2.62634524 yr ± 1.21e-09
Physical Parameters
H (abs. magnitude)18.65
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.478″
Uncertainty0
Orbit TypeAmor
MOID0.064547 AU
Observations Used7147
Radar Obs Used1
Oppositions13
Arc Total2000-2021
First Observation Used2000-08-09
Last Observation Used2024-12-06
Observations (13272)
Date Type RA Dec Mag Band Observatory
2021-08-02 04:33:59 S 20 36 45.922 +23 30 51.88 V C57
2021-08-02 04:33:59 s 1 -160995.46 4 +310971.76 7800.0 C57
2021-08-02 04:38:29 V 20 38 08.11 +24 18 20.3 14.5 V 247
2021-08-02 04:38:29 v 1 273.41730 +30.43483 247
2021-08-02 04:39:28 V 20 38 08.22 +24 18 26.3 15.3 V 247
2021-08-02 04:39:28 v 1 273.41730 +30.43483 247
2021-08-02 04:41:28 V 20 38 08.40 +24 18 37.9 15.1 V 247
2021-08-02 04:41:28 v 1 273.41730 +30.43483 247
2021-08-02 04:45:26 V 20 38 08.91 +24 18 59.1 14.3 V 247
2021-08-02 04:45:26 v 1 273.41730 +30.43483 247
2021-08-02 04:53:59 S 20 36 49.488 +23 32 41.82 V C57
2021-08-02 04:53:59 s 1 -161520.14 4 +310184.04 7230.0 C57
2021-08-02 05:03:59 S 20 36 51.113 +23 33 35.32 V C57
2021-08-02 05:03:59 s 1 -161781.70 1 +309788.67 4350.0 C57
2021-08-02 05:10:39 V 20 38 11.34 +24 21 18.9 14.6 V 247
2021-08-02 05:10:39 v 1 273.41730 +30.43483 247
2021-08-02 05:11:38 V 20 38 11.43 +24 21 24.2 15.0 V 247
2021-08-02 05:11:38 v 1 273.41730 +30.43483 247
2021-08-02 05:13:59 S 20 36 52.836 +23 34 29.35 V C57
2021-08-02 05:13:59 s 1 -162042.73 5 +309392.30 9730.0 C57
2021-08-02 05:14:37 V 20 38 11.73 +24 21 39.8 14.5 V 247
2021-08-02 05:14:37 v 1 273.41730 +30.43483 247
2021-08-02 05:15:37 V 20 38 11.89 +24 21 44.8 14.5 V 247
2021-08-02 05:15:37 v 1 273.41730 +30.43483 247
2021-08-02 05:33:59 S 20 36 56.347 +23 36 17.46 V C57
2021-08-02 05:33:59 s 1 -162563.22 3 +308596.53 5250.0 C57
2021-08-02 05:43:59 S 20 36 58.034 +23 37 11.32 V C57
2021-08-02 05:43:59 s 1 -162822.67 3 +308197.13 5380.0 C57
2021-08-02 06:03:59 S 20 37 01.464 +23 38 59.35 V C57
2021-08-02 06:03:59 s 1 -163339.97 9 +307395.30 340.0 C57
2021-08-02 06:23:59 S 20 37 04.956 +23 40 46.85 V C57
2021-08-02 06:23:59 s 1 -163855.14 3 +306589.42 8200.0 C57
2021-08-02 06:33:59 S 20 37 06.698 +23 41 41.82 V C57
2021-08-02 06:33:59 s 1 -164111.91 9 +306184.97 9460.0 C57
2021-08-02 06:43:59 S 20 37 08.386 +23 42 36.50 V C57
2021-08-02 06:43:59 s 1 -164368.15 3 +305779.51 8920.0 C57
2021-08-02 07:03:59 S 20 37 11.914 +23 44 22.52 V C57
2021-08-02 07:03:59 s 1 -164878.99 2 +304965.53 2450.0 C57
2021-08-02 07:23:59 S 20 37 15.271 +23 46 11.50 V C57
2021-08-02 07:23:59 s 1 -165387.64 5 +304147.51 8730.0 C57
2021-08-02 07:43:59 S 20 37 18.746 +23 47 58.81 V C57
2021-08-02 07:43:59 s 1 -165894.09 7 +303325.42 7730.0 C57
2021-08-02 07:53:59 S 20 37 20.515 +23 48 52.70 V C57
2021-08-02 07:53:59 s 1 -166146.49 2 +302912.86 4480.0 C57
2021-08-02 08:03:59 S 20 37 22.193 +23 49 46.52 V C57
2021-08-02 08:03:59 s 1 -166398.33 2 +302499.27 9400.0 C57
2021-08-02 08:13:59 S 20 37 23.892 +23 50 41.03 V C57
2021-08-02 08:13:59 s 1 -166649.61 3 +302084.67 2460.0 C57
2021-08-02 08:23:59 S 20 37 25.661 +23 51 35.10 V C57
2021-08-02 08:23:59 s 1 -166900.33 5 +301669.05 3670.0 C57
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2021-07-23 05:30:00 67479907 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)